Social Media

The Register – @TheRegister

https://twitter.com/theregister
Twitter profile: Biting the hand that feeds IT. Technology and science news for world+dog. 
Follow us: Science and technology news for the world

Tripwire, Inc. – @TripwireInc

https://twitter.com/TripwireInc
Twitter profile: The leading provider of advanced threat, security and compliance solutions to confidently detect, prevent and respond to cybersecurity threats
Follow for: News. Trends. Insights.

Naked Security – @NakedSecurity

https://twitter.com/NakedSecurity
Twitter profile: Award-winning security news, opinion, advice and research from Sophos
Follow for: Security Industry news and views

LinkedIn

InfoSec Careers (Information Security)

https://www.linkedin.com/groups/1364287/profile

InfoSec Careers is dedicated to connecting Information Security and Cyber professionals interested in a new permanent career opportunity or contracting jobs with specialist recruiters and hiring managers looking for new talent. This is THE LinkedIn Group for Cyber & Information Security Jobs and all those interested in IT Security news from industry.

This group is specifically relevant for those professionals holding CISM, CISA, CREST, BS7799 / ISO27001 Lead Auditor, CISSP, GIAC, PCI QSA, CRISC, CLAS or similar certifications.

Type: Networking Group
Members: 9,120 

Jericho Forum

The Jericho Forum is an international IT security thought-leadership group dedicated to defining ways to deliver effective IT security solutions that will match the increasing business demands for secure IT operations in our open, Internet-driven, globally networked world. 
This Linkedin group only indicates interest - for actual Jericho Forum members see https://www.opengroup.org/jericho/memberCompany.htm.

Type: Professional Group
Members: 1,057
https://www.linkedin.com/groups?home=&gid=47229

SC Magazine UK (Information Security)

https://www.linkedin.com/groups/1833658/profile

This group is open to professionals working in information security and risk management and is affiliated to SC Magazine and SC branded events including conferences. The SC brand provides information and intelligence for professionals working in information and organisational security.

Its followers include FTSE 100 CISOs and CSOs who are relied upon to protect their businesses from the wide-ranging data threats that exist in the world today.

Type: Networking Group
Members: 6,334

Blog

Everything SysAdmin

http://everythingsysadmin.com/
Follow the news and views of 3 published authors

UK Government Security Blog

https://securityprofession.blog.gov.uk/
This blog will bring you updates about what’s happening in the Security Profession across Government

Google Online Security Blog

http://googleonlinesecurity.blogspot.co.uk/
News and updates from Google

Security Bistro

http://ddosprotectionblog.corero.com/blog/
IT network security and DDoS security news. Email security, cyber security, spear-phising

Security Bloggers Network

http://www.securitybloggersnetwork.com/security-bloggers-network-the-feed/ 
The Security Bloggers Network is the largest collection of information security focused blogs and podcasts in the world. Of the almost 300 different blogs and podcasts included, each one has requested to be included in the aggregated feed.

Graham Cluley

https://grahamcluley.com/
Graham Cluley, public speaker and independent computer security analyst. He is an independent blogger and talks to the media about computer security issues, speaks at company events and conferences. He has given talks around the world at events such as RSA, Infosec, Web Summit, EICAR, AVAR, ICSA, ISSA, Virus Bulletin, Ja.net, Campus Party and the European Internet Security Forum.

Roger’s Information Security Blog

http://www.infosecblog.org/
In a previous life I was security administrator responsible for the day to day computer security at a mid-sized beltway bandit.   In that role I would recommend, evaluate, select and implement security solutions.   This included things like PKI, Desktop Encryption, EFS, Desktop Endpoint Protection, DLP, IDS, Firewall, vulnerability scanning, patch management, FISMA, and NAC.